AdjustWindowRectLibrary: User32Min. Required OS: Windows NT 3.1 or later; Windows 95 or laterGroup: RectDescription: The AdjustWindowRect function calculates the required size of the window rectangle, based on the desired client-rectangle size. The window rectangle can then be passed to the CreateWindow function to create a window whose client area is the desired size.Example(s): DeferWindowPosRelated function(s):AdjustWindowRectEx